Machine-tool.



C. A. ALDEN.

MACHlNE TO0L.- APPLICATION FILED 011.3, I9I6.

Patented Jan. 9, 1917.

2 SHEETS-SHEET I.

@N @N N C. A. ALDEN.

MACHINE TOOL.

APPLICATION FILED APR.3. 191s.

1,21 1,381. Patented Jan. 9,1917.

2 SHEETSSHEET 2.

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Afnuenton- Clzdrlai'flfllden,

TE STATES CHARLES A. ALDEN, OF STEEL'ION, PENNSYLVANIA.

MACHINE-TOOL.

Specification of Letters Patent.

Patented Jan. 9, 1917.

Application filed April 3, 1916. Serial No. 88,486.

To all whom it may concern I Be it known that I, CHARLES A. ALDEN, a citizen of the United States, residing at Steelto-n, in the county of Dauphin and State of Pennsylvania, have invented cer-' long to be conveniently turned bodily around such holes or projections. Heretofore in machines for doing this work, e1 her all parts of the pieces of work have been rotated around an axis or the tool, in addition to its grinding or cutting activity, has been caused to move around the projections oraround the walls of the holes.

The object of my invention is to provide anovel, simple and efficient machine whereby the projections or the walls of holes of large or long pieces of work may be ground or shaped by supporting and actuating the pieces of work in relation to the tool, so that the tool, aside from its grinding or cutting activity may remain in one position, and so that all parts of the pieces of work need not be rotated around an axis.

With this object in view, my invented machine consists of the elements and the combinations of them hereinafter described and claimed.

In the. accompanying drawings, illustrating my invention, Figure 1 is a side elevation, partly in section, of a machine 'tool embodying my invention. Fig. 2 is a sectional detail, on line 22 of Fig. 1. Fig. 3 is a horizontal section, on line 3-3 of Fig.1.

The main frame of the machine comprises a base portion 4 mounted on a suitable supporting base 5 and having an overhanging 6 which supports the grinding or portion tool 7 This tool 7 may be of any cuttin suitab e character and it may be actuated in any desirable manner to accomplish sired grinding or cutting action. In the present embodiment of my invention, the

tool 7 is a grinding wheel formed of emery or other, suitable material, and it is carried by the lower end of a vertically arranged shaft 8 which is adapted'to turn in bearings on a, bracket 9 which is secured to the overhanging portion 6 of the main frame of the the demachine. The shaft 8 is provided with a pulley 10 by means of which the shaft 8 and tool 7 may be rotated by any suitable powea Below the tool 7 is an elongated bed 11- which extends across the base portion 4 of the main frame and is supported thereon and secured thereto and forms, in effect, a part thereof. This frame bed 11 supports an adjustable frame 12 and is provided with longitudinally extending guiding ribs 13 to .which the adjustable frame 12 is slidably fitted to permit it to be adjusted longitudinally of the frame bed 11. To effect this adjustment, I provide a screw threaded shaft 14 which extendsparallel to the ribs 13 and is screwed into and through a lug 15 on the adjustable frame 12. The shaft 14 turns in a bearing 16 on the frame bed 11 and is provided with collars 17 which engage the respective' sides of the bearing 16 andprevent longitudinal movement of the shaft 14 when it is turned. The shaft 14 extends outwardly from the bearing 16 and its outer end portion is made square for the application thereto of a wrench or other suitable tool by means of which the shaft maybe turned to adjust the frame 12.

Rotatably mounted on the adjustable frame 12 is a. member or table 18 having a downwardly projecting pivot pin 19 which is mounted to turn a bearing in the frame 12.. The outer portion of this rotatablethereon which coacts with a bevel gear wheel 25 which is splined on a horizontal shaft 26 which extends parallel tothe frame bed 11 and is mounted to turn in bearings 27 and 28 thereon. The gear wheel 25 is maintained in engagement with the gear wheel 24, in different positions of adjustment of the frame 12, by and between the bearing 28. and the gear wheel 24, the

bearing 28 and gear wheel 24 causing the gear wheel 25 to move longitudinally of the shaft 26 when the frame 12 is adjusted. One end of the shaft 26 extends outwardly and is provided with a pulley 29 by means of which the shaft 26 may be rotated by member 32, as shown.

any suitable power, to cause the rotation of the table or member 18 through the gearing just described.

The top of the rotatable member 18 has a groove or guideway 30 formed therein to which are slidably fitted the downwardly extending lugs 31 of an adjustable member 32 which rests upon and is adapted to slide over the. rotatable member 18, guided .by the groove 30. To adjust the member 32, 1 provide a screw-threaded shaft 33 which extends through and parallel to the groove 30 and is screwed into and through the lugs 31 of the adjustable frame 32 and has end portions which are mounted in bearings 34 on the rotatable member 18, the bearings 34 rotatably supporting the shaft 33 and preventing longitudinal movement thereof when the same is turned. One end of the shaft 33 extends outwardly and is provided with a suitable hand wheel 35, by means of which the shaft 33 may be turned to adjust the member 32 relatively to the member 18.

The adjustable member 32 carries a table or work support 36 which is rotatably mounted on a post 37 which rises from the This work support 36 is provided with undercut grooves 38 adapted to receive the heads of bolts 39 which are passed through openings in clamping devices 40 and are provided with nuts 41 on their upper ends which are adapted to force the clamping devices 40 toward the top of the carrier 36, to clamp a piece of work between them and the carrier to lock the work and the carrier together, to cause them to be moved as a unit for a purpose hereinafter explained. 4 Rising from the supporting base 5 at a convenient distance from the main frame is a standard 42 supporting a member 43. The member 43 supports a member 44 which is pivoted centrally thereon by means of a bolt 45 extending through members 43 and 44. The pivoted member 44 carries a plate 46 which is provided with outwardly extending arms 47 carrying a pair of parallel rollers 48 which support an elongated work support or table-49. This work support 49 is longitudinally movable toward and from the work carrier 38, previously referred to, while, at the same time, the pivoted member 44 and the work support 49 may turn on the pivbt pin 45, for a purpose hereinafter explained. During this longitudinal and turning movement of the work support 49, its longitudinal axis is maintained centrally over the pivot pin 45 by arms or brackets 50 rising from the plate 46 on the respective sides of the work support 49. Thesebrackets 50 prevent lateral displacement of the work support on the rollers 48. The work support 49 is provided with pairs of upwardly extending bolts 51 having nuts 54 on the upper ends thereof which are adapted to be screwed down upon clamping bars 52 which connect the bolts 51 of the pairs and cause the bars 52 to clamp a piece of work to the support 49. To prevent any liability of a piece of work on the support 49 from being displaced laterally thereon, I provide the support 49 with a pair of upwardly projecting pins 53 which are adapted to engage the respective sides of a piece of work on .the support.

The purpose of adjusting the frame 12 is to permit the setting of the axis of the pivot pin 19 in true alinement with the axis of the tool shaft 8; and the purpose of adjusting the member 32 on the rotatable member 18 is to move the axis of the pivot pin 37 toward and from the axis of the tool 7 to vary the relation of the work carrier 36 and its axis to the tool 7, before and during the grinding or finishing operation, as will be hereinafter described.

The operation of the machine is as follows: In the drawings I have shown a piece of work 60 comprising a long bar 61 extend ing between and supported on'the work carrier 36 and the work support 49 and having a pin or cylindrical portion 62 extending upwardly from one end thereof which is to be ground or finished by the tool 7.. One end portion of the bar 61 is placed centrally upon the support 49, between the pins 53 and beneath the clamping bars 52; and the other end portion of the bar 61 is placed upon the carrier 36 with the axis of its pin or cylindrical projection 62 in alinement with the axis of the pivot pin 37 of the carrier 36. -The clamping devices 40 are then adjusted over the bar 61 and the nuts 41 and 54 are then screwed down to clamp the bar 61 to the carrier 36 and support 49, respectively. After the work 60 has been secured in place, as just described, power is applied to the pulleys 10 and 29, causing the rotation of the tool 7 and the rotation of the rotatable member 18 and adjustable member 32 thereon, thereby revolving the .pivot pin 37 of the work carrier 36 and the cylindrical projection 62 of the work 60 around the axis of the tool 7 and the rotatable member 18, while the body of the bar 61 is restrained from revolving around the tool 7 by the work support 49. During this operation, the work support 49 and the work carrier 36 are oscillated on the pivots 45 and 37, and the work support 49 is longitudinally reciprocated on the rollers 48, while the members 18 and 32 carry the work carrier 36 in a true circle around the axis of the tool 7, therebv revolving the cylindrical projection 62 (if the work 60 around the tool 7 and maintain- .to bring the projection 62 against the tool 7 to be acted upon thereby, and, during the further operation of the machine, the tool 7 grinds 0r finishes a truecylindrical surface on the projection 62, the hand wheel 35 being operated, as desired, to vary the distance between the tool 7 and the projection 62 for the proper grinding operation.

From the operation just described, it will be readily understood that if it be desired to grind or finish the wall or surface of a hole or opening in a piece of work, the same may be done by securing the piece of work to the support 49 and carrier 36 with the axis of the hole or opening in the work in alinement with the pivot 37 of the carrier 36, and with the tool 7 within the hole or opening, and then turning the hand wheel 35 to bring the wall of the hole in the work into proper relation to the tool 7 for the grinding or finishing operation. The tool 7 may be placed within the hole or opening in the work by the proper vertical adjustment of the shaft 8 through the bracket 9 and pulley 10.

I claim:

1. The combination of a frame, a m vable tool, mean's operative to actuate the to l, a rotatable member, means operative to rotate said member, a work carrier carried by said member, and means adapted to engage. work carried by said carrier and prevent said work from turning on the axis of said member, whereby work carried by said carrier may be acted upon by said tool.

2. The combination of a frame, a rotatable tool, means operative to rotate the tool, a rotatable member having its axis of rotation in alinement with the axis of rotation of the tool, means operative to rotate said member, a work carrier carried by said member, and means to prevent work carried by said carrier from turning on the axis of said member, whereby work carried by said carrier may be acted upon by said tool.

3. The combination of a frame, a movable tool, means operative to actuate the tool, a rotatable member, means operative to rotate said member, a work carrier rotatably mounted .on said member and adapted to carry a portion of the work acted upon by the tool, and a work support adapted to sup- 1 port another portion of the work and prevent it from turning on, the axis of said member.

4. The combination of a frame, a rotatable tool, means operative to rotate the tool, a rotatable member having its axis of rotation inalinement with the axis of rotation of the tool, means operative to rotate saidymember,

said carrier from turning on the axis of said member, whereby work carried by said carrier may be acted upon by said tool.

6. The combination of a frame, a rotatable tool, means operative to rotate the tool, a rotatable member having its axis of rotation in alinement with the axis of rotation of the tool, means operative to rotate said member, a work carrier rotatably mounted on said member and having its axis of rotation out of alinement with the axis of rotation of the tool, and being adapted to carry a portion of the work acted upon by the tool and. a work support adapted to support another portion of the work and prevent it from turning on the axis of said member.

7. The combination of a frame, a movable tool, means operative to actuate the tool, a rotatable member, means operative to ro tate said member, a Work carrier carried by said memberand adapted to carry a portion of the ,work acted-upon by said tool, a pivoted member, and a work support slidable on said pivoted member and adapted to support another portion of the Work and prevent it from turning on the axis of said member.

8. The combination of a frame, a rotatable tool, means operative to rotate the tool, a

rotatable member having its axis of rotation in alinement with the axis of rotation of the tool, means operative to rotate said member, a work carrier rotatably mounted on said member and having its axis of rotation out of alinement with the axis of rotation of said tool and being adapted to carry a portion of the work acted upon by said tool, a pivoted member, and a work support slidable'on said pivoted member, and adapted to support ana other portion of the work and prevent it from turning on the axis of said member.

9. The combination of a frame, a movable tool, means operative to actuate the tool, a rotatable member, means operative to rotate said member, an adjustable member carried.

by said rotatable member, means operative to adjust the readjustable member, a work carrier carried by said adjustable member, and means to prevent work carried by said carrier from turning on the axis of said member, whereby work carried by said carrier may be acted upon by said tool.

10. The combination of a frame, a movable tool, means operative to actuate the tool, a rotatable member, means operative to rotate said member, an adjustable member carried by said rotatable member, means operative to adjust the adjustable member,

a work carrier rotatably mounted on said adjustable member and adapted to carry a portion of the work acted upon by the tool, and a Work support adapted to support an other portion of the work and prevent it from turning on the axis of said member.

11. The combination of a frame, a rota table tool, means operative to rotate the tool, a rotatable member having its axis of rotation in alinement with the axis of rotation of the tool, means operative to rotate said member, an adjustable member carried by said rotatable member, means operative to adjust the adjustable member, a work carrier rotatably mounted on said adjustable member and adapted to carry a portion of the work acted upon by the tool, and a work support adapted to support another portion of the work and prevent it from turning on the axis of said member.

12. The combination of a main frame, a movable tool supported thereby, means operative to actuate the tool, an adjustable frame supported by the main frame, means operative to adjust the ad ustable frame, a rotatable member supported by the ad ustable frame, means operative to rotate said member, a. work carrier carried by said member, and means to prevent work carried by said carrier from turning on the axis of said member, whereby wo'rk carried by said carrier may be acted upon by said tool.

13. The combination of a main frame, a movable tool. supported thereby, means operative' to actuate the tool, an adjustable frame supported by the main frame, means operative to adjust the ad ust-able frame, a rotatable member supported by the ad ustable frame, a work carrier rotatably mounted on said member and adapted to carry a portion of the work acted upon by the tool, and a work support adapted to support another portion of the work and prevent it from turning on the axis of said member.

14. The combination of a main frame, a

movable tool supported thereby, means operative to actuate the tool, an ad ustable frame supported by the main frame, means member, an adjustable member carried by said rotatable member, means operative to adjust the adjustable member, a work carrier carried by said adjustable member, and means to prevent work carried by said carrier from turning on the axis of said member, whereby work carried by said carrier may be acted upon bysaid tool.

15. The combination of a main frame, a

movable tool supported thereby, means opport-ion of the work and prevent it fromturning on the axis of ,saidmember.

16. The combination of a frame, a movable tool, means operative to actuate the tool, a rotatable member, means operative to rotate said member, a work carrier rotatably mounted on said member and adapted to carry a portion of the work acted upon by the tool, meansto secure the work to said carrier, and a work support adapted to support another portion of the work and prevent it from turning on the axis of said member.

17. The combination of a frame, a movable tool, means operative to actuate the tool, a rotatable member, means operative to rotate said member,- a work carrier rotatably mounted on 'said member and adapted to carry a portion of the work acted upon by the tool, means to secure the work to said carrier, a pivoted member, and a Work support slidable on said pivoted member and adapted to support another portion of the work and prevent it. from turning on the axis of said member.

In testimony whereof I afiix my signature hereto.

CHARLES A. ALDEN. 

